US3790636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of alkyl substituted resorcinols
Assignee: F Hoffmann La Roche AG
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Filing: 1971-09-16
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Granted: 1974-02-05
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Expires: 1991-09-16
Abstract
Abstract PREPARATION OF 5-ALKYL SUBSTITUTED RESORCINOLS SUCH AS OLIVETOL FROM ALIPHATIC ALDEHYDES AND INTERMEDIATES IN THIS PROCESS.
Inventors
- 👤 A Brossi
- 👤 A Focella
- 👤 S Teitel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:56
CPC Classifications
C; C07; C07C; C07C49/00; C07C49/587; C07C49/753; C07C37/00; C07C37/01; C07C37/055; C07C37/06; C07C37/07; C07C37/50; C07C45/00; C07C45/61; C07C45/63; C07C45/67; C07C45/673; C07C45/676; C07C45/68; C07C45/70; C07C45/71; C07C45/72; C07C45/74
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |